alyssa80112 alyssa80112
  • 13-11-2017
  • Mathematics
contestada

What is the solution to the system of equations 2x-5y=-5 and x+2y=11?

Respuesta :

mathstudent55
mathstudent55 mathstudent55
  • 13-11-2017
2x - 5y = -5
 x + 2y = 11

Multiply the second equation by -2 and add to the first equation. This eliminates x, and we solve for y.

 2x - 5y = -5
-2x - 4y = -22
------------------
       -9y = -27

y = 3

Now substitute y = 3 in the second original equation and solve for x.

x + 2(3) = 11

x + 6 = 11

x = 5

Solution: x = 5 and y = 3
Answer Link

Otras preguntas

Is it possible to cut a rectangular prism so that its cross section is a circle orman ellipse?
Explain how heat is transferred inside the earth through convection currents
What is the coefficient in this expression? 17 + 5a
0.8x+3.2-4.3x=7.7-1.2x
what physical property makes metal pots good for cooking?
3. It was only after the _______ _______ that people started gathering in larger groups and formed more complex institutions. Was it the: Industrial Revolution,
In three math tests, you score 91,95, and 88 points. How many points must you score on the fourth test to have an A average, or at least 90 points?
What was a common problem in feudal society that the Church tried to stop during holy days and seasons?.
how do you convert units within a measurement system
Solve each system of linear equations by substitution. 3x - 2y = 9 y = 2x - 7 Pease show all steps